| /* |
| * Copyright (c) 2011, Max Filippov, Open Source and Linux Lab. |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are met: |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * * Neither the name of the Open Source and Linux Lab nor the |
| * names of its contributors may be used to endorse or promote products |
| * derived from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
| * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY |
| * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
| * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
| * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
| * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
| * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #include "sysemu/sysemu.h" |
| #include "hw/boards.h" |
| #include "hw/loader.h" |
| #include "elf.h" |
| #include "exec/memory.h" |
| #include "exec/address-spaces.h" |
| #include "hw/char/serial.h" |
| #include "net/net.h" |
| #include "hw/sysbus.h" |
| #include "hw/block/flash.h" |
| #include "sysemu/block-backend.h" |
| #include "sysemu/char.h" |
| #include "sysemu/device_tree.h" |
| #include "qemu/error-report.h" |
| #include "bootparam.h" |
| |
| typedef struct LxBoardDesc { |
| hwaddr flash_base; |
| size_t flash_size; |
| size_t flash_boot_base; |
| size_t flash_sector_size; |
| size_t sram_size; |
| } LxBoardDesc; |
| |
| typedef struct Lx60FpgaState { |
| MemoryRegion iomem; |
| uint32_t leds; |
| uint32_t switches; |
| } Lx60FpgaState; |
| |
| static void lx60_fpga_reset(void *opaque) |
| { |
| Lx60FpgaState *s = opaque; |
| |
| s->leds = 0; |
| s->switches = 0; |
| } |
| |
| static uint64_t lx60_fpga_read(void *opaque, hwaddr addr, |
| unsigned size) |
| { |
| Lx60FpgaState *s = opaque; |
| |
| switch (addr) { |
| case 0x0: /*build date code*/ |
| return 0x09272011; |
| |
| case 0x4: /*processor clock frequency, Hz*/ |
| return 10000000; |
| |
| case 0x8: /*LEDs (off = 0, on = 1)*/ |
| return s->leds; |
| |
| case 0xc: /*DIP switches (off = 0, on = 1)*/ |
| return s->switches; |
| } |
| return 0; |
| } |
| |
| static void lx60_fpga_write(void *opaque, hwaddr addr, |
| uint64_t val, unsigned size) |
| { |
| Lx60FpgaState *s = opaque; |
| |
| switch (addr) { |
| case 0x8: /*LEDs (off = 0, on = 1)*/ |
| s->leds = val; |
| break; |
| |
| case 0x10: /*board reset*/ |
| if (val == 0xdead) { |
| qemu_system_reset_request(); |
| } |
| break; |
| } |
| } |
| |
| static const MemoryRegionOps lx60_fpga_ops = { |
| .read = lx60_fpga_read, |
| .write = lx60_fpga_write, |
| .endianness = DEVICE_NATIVE_ENDIAN, |
| }; |
| |
| static Lx60FpgaState *lx60_fpga_init(MemoryRegion *address_space, |
| hwaddr base) |
| { |
| Lx60FpgaState *s = g_malloc(sizeof(Lx60FpgaState)); |
| |
| memory_region_init_io(&s->iomem, NULL, &lx60_fpga_ops, s, |
| "lx60.fpga", 0x10000); |
| memory_region_add_subregion(address_space, base, &s->iomem); |
| lx60_fpga_reset(s); |
| qemu_register_reset(lx60_fpga_reset, s); |
| return s; |
| } |
| |
| static void lx60_net_init(MemoryRegion *address_space, |
| hwaddr base, |
| hwaddr descriptors, |
| hwaddr buffers, |
| qemu_irq irq, NICInfo *nd) |
| { |
| DeviceState *dev; |
| SysBusDevice *s; |
| MemoryRegion *ram; |
| |
| dev = qdev_create(NULL, "open_eth"); |
| qdev_set_nic_properties(dev, nd); |
| qdev_init_nofail(dev); |
| |
| s = SYS_BUS_DEVICE(dev); |
| sysbus_connect_irq(s, 0, irq); |
| memory_region_add_subregion(address_space, base, |
| sysbus_mmio_get_region(s, 0)); |
| memory_region_add_subregion(address_space, descriptors, |
| sysbus_mmio_get_region(s, 1)); |
| |
| ram = g_malloc(sizeof(*ram)); |
| memory_region_init_ram(ram, OBJECT(s), "open_eth.ram", 16384, &error_abort); |
| vmstate_register_ram_global(ram); |
| memory_region_add_subregion(address_space, buffers, ram); |
| } |
| |
| static uint64_t translate_phys_addr(void *opaque, uint64_t addr) |
| { |
| XtensaCPU *cpu = opaque; |
| |
| return cpu_get_phys_page_debug(CPU(cpu), addr); |
| } |
| |
| static void lx60_reset(void *opaque) |
| { |
| XtensaCPU *cpu = opaque; |
| |
| cpu_reset(CPU(cpu)); |
| } |
| |
| static void lx_init(const LxBoardDesc *board, MachineState *machine) |
| { |
| #ifdef TARGET_WORDS_BIGENDIAN |
| int be = 1; |
| #else |
| int be = 0; |
| #endif |
| MemoryRegion *system_memory = get_system_memory(); |
| XtensaCPU *cpu = NULL; |
| CPUXtensaState *env = NULL; |
| MemoryRegion *ram, *rom, *system_io; |
| DriveInfo *dinfo; |
| pflash_t *flash = NULL; |
| QemuOpts *machine_opts = qemu_get_machine_opts(); |
| const char *cpu_model = machine->cpu_model; |
| const char *kernel_filename = qemu_opt_get(machine_opts, "kernel"); |
| const char *kernel_cmdline = qemu_opt_get(machine_opts, "append"); |
| const char *dtb_filename = qemu_opt_get(machine_opts, "dtb"); |
| const char *initrd_filename = qemu_opt_get(machine_opts, "initrd"); |
| int n; |
| |
| if (!cpu_model) { |
| cpu_model = XTENSA_DEFAULT_CPU_MODEL; |
| } |
| |
| for (n = 0; n < smp_cpus; n++) { |
| cpu = cpu_xtensa_init(cpu_model); |
| if (cpu == NULL) { |
| error_report("unable to find CPU definition '%s'\n", |
| cpu_model); |
| exit(EXIT_FAILURE); |
| } |
| env = &cpu->env; |
| |
| env->sregs[PRID] = n; |
| qemu_register_reset(lx60_reset, cpu); |
| /* Need MMU initialized prior to ELF loading, |
| * so that ELF gets loaded into virtual addresses |
| */ |
| cpu_reset(CPU(cpu)); |
| } |
| |
| ram = g_malloc(sizeof(*ram)); |
| memory_region_init_ram(ram, NULL, "lx60.dram", machine->ram_size, |
| &error_abort); |
| vmstate_register_ram_global(ram); |
| memory_region_add_subregion(system_memory, 0, ram); |
| |
| system_io = g_malloc(sizeof(*system_io)); |
| memory_region_init(system_io, NULL, "lx60.io", 224 * 1024 * 1024); |
| memory_region_add_subregion(system_memory, 0xf0000000, system_io); |
| lx60_fpga_init(system_io, 0x0d020000); |
| if (nd_table[0].used) { |
| lx60_net_init(system_io, 0x0d030000, 0x0d030400, 0x0d800000, |
| xtensa_get_extint(env, 1), nd_table); |
| } |
| |
| if (!serial_hds[0]) { |
| serial_hds[0] = qemu_chr_new("serial0", "null", NULL); |
| } |
| |
| serial_mm_init(system_io, 0x0d050020, 2, xtensa_get_extint(env, 0), |
| 115200, serial_hds[0], DEVICE_NATIVE_ENDIAN); |
| |
| dinfo = drive_get(IF_PFLASH, 0, 0); |
| if (dinfo) { |
| flash = pflash_cfi01_register(board->flash_base, |
| NULL, "lx60.io.flash", board->flash_size, |
| blk_by_legacy_dinfo(dinfo), |
| board->flash_sector_size, |
| board->flash_size / board->flash_sector_size, |
| 4, 0x0000, 0x0000, 0x0000, 0x0000, be); |
| if (flash == NULL) { |
| error_report("unable to mount pflash\n"); |
| exit(EXIT_FAILURE); |
| } |
| } |
| |
| /* Use presence of kernel file name as 'boot from SRAM' switch. */ |
| if (kernel_filename) { |
| uint32_t entry_point = env->pc; |
| size_t bp_size = 3 * get_tag_size(0); /* first/last and memory tags */ |
| uint32_t tagptr = 0xfe000000 + board->sram_size; |
| uint32_t cur_tagptr; |
| BpMemInfo memory_location = { |
| .type = tswap32(MEMORY_TYPE_CONVENTIONAL), |
| .start = tswap32(0), |
| .end = tswap32(machine->ram_size), |
| }; |
| uint32_t lowmem_end = machine->ram_size < 0x08000000 ? |
| machine->ram_size : 0x08000000; |
| uint32_t cur_lowmem = QEMU_ALIGN_UP(lowmem_end / 2, 4096); |
| |
| rom = g_malloc(sizeof(*rom)); |
| memory_region_init_ram(rom, NULL, "lx60.sram", board->sram_size, |
| &error_abort); |
| vmstate_register_ram_global(rom); |
| memory_region_add_subregion(system_memory, 0xfe000000, rom); |
| |
| if (kernel_cmdline) { |
| bp_size += get_tag_size(strlen(kernel_cmdline) + 1); |
| } |
| if (dtb_filename) { |
| bp_size += get_tag_size(sizeof(uint32_t)); |
| } |
| if (initrd_filename) { |
| bp_size += get_tag_size(sizeof(BpMemInfo)); |
| } |
| |
| /* Put kernel bootparameters to the end of that SRAM */ |
| tagptr = (tagptr - bp_size) & ~0xff; |
| cur_tagptr = put_tag(tagptr, BP_TAG_FIRST, 0, NULL); |
| cur_tagptr = put_tag(cur_tagptr, BP_TAG_MEMORY, |
| sizeof(memory_location), &memory_location); |
| |
| if (kernel_cmdline) { |
| cur_tagptr = put_tag(cur_tagptr, BP_TAG_COMMAND_LINE, |
| strlen(kernel_cmdline) + 1, kernel_cmdline); |
| } |
| if (dtb_filename) { |
| int fdt_size; |
| void *fdt = load_device_tree(dtb_filename, &fdt_size); |
| uint32_t dtb_addr = tswap32(cur_lowmem); |
| |
| if (!fdt) { |
| error_report("could not load DTB '%s'\n", dtb_filename); |
| exit(EXIT_FAILURE); |
| } |
| |
| cpu_physical_memory_write(cur_lowmem, fdt, fdt_size); |
| cur_tagptr = put_tag(cur_tagptr, BP_TAG_FDT, |
| sizeof(dtb_addr), &dtb_addr); |
| cur_lowmem = QEMU_ALIGN_UP(cur_lowmem + fdt_size, 4096); |
| } |
| if (initrd_filename) { |
| BpMemInfo initrd_location = { 0 }; |
| int initrd_size = load_ramdisk(initrd_filename, cur_lowmem, |
| lowmem_end - cur_lowmem); |
| |
| if (initrd_size < 0) { |
| initrd_size = load_image_targphys(initrd_filename, |
| cur_lowmem, |
| lowmem_end - cur_lowmem); |
| } |
| if (initrd_size < 0) { |
| error_report("could not load initrd '%s'\n", initrd_filename); |
| exit(EXIT_FAILURE); |
| } |
| initrd_location.start = tswap32(cur_lowmem); |
| initrd_location.end = tswap32(cur_lowmem + initrd_size); |
| cur_tagptr = put_tag(cur_tagptr, BP_TAG_INITRD, |
| sizeof(initrd_location), &initrd_location); |
| cur_lowmem = QEMU_ALIGN_UP(cur_lowmem + initrd_size, 4096); |
| } |
| cur_tagptr = put_tag(cur_tagptr, BP_TAG_LAST, 0, NULL); |
| env->regs[2] = tagptr; |
| |
| uint64_t elf_entry; |
| uint64_t elf_lowaddr; |
| int success = load_elf(kernel_filename, translate_phys_addr, cpu, |
| &elf_entry, &elf_lowaddr, NULL, be, ELF_MACHINE, 0); |
| if (success > 0) { |
| entry_point = elf_entry; |
| } else { |
| hwaddr ep; |
| int is_linux; |
| success = load_uimage(kernel_filename, &ep, NULL, &is_linux, |
| translate_phys_addr, cpu); |
| if (success > 0 && is_linux) { |
| entry_point = ep; |
| } else { |
| error_report("could not load kernel '%s'\n", |
| kernel_filename); |
| exit(EXIT_FAILURE); |
| } |
| } |
| if (entry_point != env->pc) { |
| static const uint8_t jx_a0[] = { |
| #ifdef TARGET_WORDS_BIGENDIAN |
| 0x0a, 0, 0, |
| #else |
| 0xa0, 0, 0, |
| #endif |
| }; |
| env->regs[0] = entry_point; |
| cpu_physical_memory_write(env->pc, jx_a0, sizeof(jx_a0)); |
| } |
| } else { |
| if (flash) { |
| MemoryRegion *flash_mr = pflash_cfi01_get_memory(flash); |
| MemoryRegion *flash_io = g_malloc(sizeof(*flash_io)); |
| |
| memory_region_init_alias(flash_io, NULL, "lx60.flash", |
| flash_mr, board->flash_boot_base, |
| board->flash_size - board->flash_boot_base < 0x02000000 ? |
| board->flash_size - board->flash_boot_base : 0x02000000); |
| memory_region_add_subregion(system_memory, 0xfe000000, |
| flash_io); |
| } |
| } |
| } |
| |
| static void xtensa_lx60_init(MachineState *machine) |
| { |
| static const LxBoardDesc lx60_board = { |
| .flash_base = 0xf8000000, |
| .flash_size = 0x00400000, |
| .flash_sector_size = 0x10000, |
| .sram_size = 0x20000, |
| }; |
| lx_init(&lx60_board, machine); |
| } |
| |
| static void xtensa_lx200_init(MachineState *machine) |
| { |
| static const LxBoardDesc lx200_board = { |
| .flash_base = 0xf8000000, |
| .flash_size = 0x01000000, |
| .flash_sector_size = 0x20000, |
| .sram_size = 0x2000000, |
| }; |
| lx_init(&lx200_board, machine); |
| } |
| |
| static void xtensa_ml605_init(MachineState *machine) |
| { |
| static const LxBoardDesc ml605_board = { |
| .flash_base = 0xf8000000, |
| .flash_size = 0x02000000, |
| .flash_sector_size = 0x20000, |
| .sram_size = 0x2000000, |
| }; |
| lx_init(&ml605_board, machine); |
| } |
| |
| static void xtensa_kc705_init(MachineState *machine) |
| { |
| static const LxBoardDesc kc705_board = { |
| .flash_base = 0xf0000000, |
| .flash_size = 0x08000000, |
| .flash_boot_base = 0x06000000, |
| .flash_sector_size = 0x20000, |
| .sram_size = 0x2000000, |
| }; |
| lx_init(&kc705_board, machine); |
| } |
| |
| static QEMUMachine xtensa_lx60_machine = { |
| .name = "lx60", |
| .desc = "lx60 EVB (" XTENSA_DEFAULT_CPU_MODEL ")", |
| .init = xtensa_lx60_init, |
| .max_cpus = 4, |
| }; |
| |
| static QEMUMachine xtensa_lx200_machine = { |
| .name = "lx200", |
| .desc = "lx200 EVB (" XTENSA_DEFAULT_CPU_MODEL ")", |
| .init = xtensa_lx200_init, |
| .max_cpus = 4, |
| }; |
| |
| static QEMUMachine xtensa_ml605_machine = { |
| .name = "ml605", |
| .desc = "ml605 EVB (" XTENSA_DEFAULT_CPU_MODEL ")", |
| .init = xtensa_ml605_init, |
| .max_cpus = 4, |
| }; |
| |
| static QEMUMachine xtensa_kc705_machine = { |
| .name = "kc705", |
| .desc = "kc705 EVB (" XTENSA_DEFAULT_CPU_MODEL ")", |
| .init = xtensa_kc705_init, |
| .max_cpus = 4, |
| }; |
| |
| static void xtensa_lx_machines_init(void) |
| { |
| qemu_register_machine(&xtensa_lx60_machine); |
| qemu_register_machine(&xtensa_lx200_machine); |
| qemu_register_machine(&xtensa_ml605_machine); |
| qemu_register_machine(&xtensa_kc705_machine); |
| } |
| |
| machine_init(xtensa_lx_machines_init); |
